Over time, the rubber belts either stretch or turn into a sticky "goo." If the radio works but the tape won't play, rewind, or fast-forward, the belt is likely the culprit.
While most manuals are available as PDFs, some archives may be compressed. You will need a utility like WinZip or WinRAR to open .zip or .rar files containing high-resolution schematics. aiwa hs ta293 stereo radio cassette player repair zip
Aiwa units are notorious for surface-mount electrolytic capacitors that leak electrolyte, leading to low volume, high-pitched squealing, or no audio. Over time, the rubber belts either stretch or
AIWA HS-TA293 Stereo Radio Cassette Player: Repair and Maintenance Guide leading to low volume